Phonograph stop



Oct. 11, 1938. E. c. GUEDON PHONOGRAPH STOP Filed July 30, 1936 4Sheets-Sheet l Oct. 11, 1938. E. c. GUEDON PHONOGRAPH STOP Filed July50, 1936 4 Sheets-Sheet 2 Oct. 11, 1938. E. c. GUEDO N PHONOGRAPH STOPFiled July 30, 1936 4 Sheets-Sheet 3 Oct. 11, 1938. E. c. GUEDONPHONOGRAPH STOP Filed July 30, 1936 4 Sheets-Sheet 4 Patented Oct. 11,1938 UNITED STATES 2,132,615 PHONOGRAPH 's'ror Emile C. Guedon, Audubon,N. J., assignor to Radio Corporation of America, a corporation ofDelaware Application July 30, i936, Serial No. 93,378

16 Claims.

This invention relates to phonographs, and more particularly to anautomatic starting and stopping device therefor.

The principal object of my invention is to provide improved controlmechanism for electrically operated phonographs which will automaticallyrender the phonograph inactive upon completion of playing of a recordhaving any type of conventional terminal. groove, and which willautomatically render the phonograph active for playing of a record by amere slight manipulation of the pick-up arm prior to placing it upon therecord.

More specifically, it is an object of my invention to provide animproved stop mechanism for electrically driven phonographs which willautomatically shut off the power to the driving motor at the completionof playing of a record and which will, at the same time, positively stoprotation of the turntable.

Another object of my invention is to provide an improved stop mechanismfor phonographs which will effectively hold the turntable againstrotation when the playing of a record has been completed irrespective ofthe type of motor employed for driving the turntable.

In certain types of electrically driven phonographs, it has been foundexpedient to use a synchronous motor which is non-self-starting andwhich, therefore, must be given a starting impulse. It is a furtherobject of my invention to provide, in phonographs of this type, improvedmeans for automatically imparting to the motor a starting impulse.

Another object of my invention is to provide improved mechanism asaforesaid which will permit repetition of portions of a record withinpredetermined limits without becoming operative to stop the phonograph;

Still another and important object of my invention is to provide animproved automatic starting and stopping device as aforesaid which isextremely simple in construction and inexpensive in cost, so as to besuitable for low-priced phonographs, but which is, nevertheless, highlyefiicient in operation.

According to my invention, the starting device and the stopping deviceare both controlled by the tone arm or pick-up arm of the phonograph.The starting mechanism consists of a normally inoperative auxiliarymotor which is of the self starting type and which is pivotally mountedadjacent the turntable with its armature shaft extending in closeproximity to the turntable periphery, butnormally out of engagementtherewith. When a record on the turntable is to be played, the pick-uparm is moved away from the record slightly, whereupon the auxiliarymotor is energized and it is tipped on its pivotal axis sufficiently tobring afriction wheel on its armature shaft into engagement with theturntable periphery. This imparts a starting impulse to the synchronousdriving motor, the circuit of which has meanwhile been completed,whereby the driving motor continues to run. As the pick-up arm isthereafter returned and placed on the record, it opens the auxiliarymotor circuit and permits it to move away from the turntable to itsnormal, inactive position.

The stopping mechanism comprises a lever which is frictionally actuatedby the pick-up arm as the latter moves across the record in the spiralsound groove thereof and which, in turn, gradually advances a plungerinto the path of a cam fixed to the rotor of the driving motor. The camis so formed that it forces the plunger and the aforesaid lever back totheir initial position as long as the pick-up arm moves across therecord at the relatively slow speed determined by the adjacent turns ofthe sound groove. When, however, the needle reaches the coarse-pitchedlead-in groove which connects the sound and terminal grooves, thepick-up arm is given a quick impulse toward the record center, whichcauses the aforementioned lever to move rapidly to interpose the end ofthe plunger in the path of the cam head. Thus, upon the next turn of therotor, the cam strikes the plunger squarely to cause it to effectopening of the driving motor circuit and substantially simultaneously tobring a friction brake into engagement with the turntable which is nowmerely coasting. The parts are so arranged that removal of the pick-uparm to its original position will automatically reset the mechanism foroperation in connection with the next record.

The novel features that I consider characteristic of my invention areset forth with particularity in the appended claims. The inventionitself, however, both as to its organization and method of operation, aswell as additional objects and advantages thereof, will best beunderstood from the following description of several embodiments thereofwhen taken in connection with the acthe parts at about the time thedriving motor is started,

Figure 2 is a view thereof partly in elevation and partly in section,

Figure 3 is an enlarged sectional view taken on the line III-III of Fig.1,

Figure 4 is a plan view similar to Fig. 1 but showing the positionof theparts at the beginning of playing of a record,

Figure 5 is a similar View showing, in solid lines, the position of theparts just before the stop mechanism has been tripped into operation,and, in dotted lines, the position of the parts just after the stopmechanism has been tripped,

Figure 6 is a detail View of the turntable braking element,

Figure 7 is an enlarged fragmentary elevation showing the relationbetween the pick-up arm, the friction lever, the switch lever and thebrake lever,

Figure 8 is a view similar to Fig. 1, but showing a modified form of myinvention, and V Figure 9 is an enlarged view thereof partly in sectionand partly in elevation taken approximately on the line IXIX of Fig. 8.

Referring more specifically to the drawings,

wherein similar reference characters designate corresponding partsthroughout, there is shown,

in Figs. 1 to 5, a motor board I on which is' mounted an electricdriving motor 3 of the nonself-starting type, the motor being,preferably, a synchronous motor of the type disclosed and claimed in thecopending application of Henry E. Boys, Serial No. 8,664, assigned tothe Radio Corporation of America, and including a stator 5 surrounded byan annular rotor 1. Fixed to n the rotor 'I is a turntable 9 upon whicha record II is supported during reproduction, the turntable 9 includinga peripheral flange I3 and a record centering spindle I5.

A bushing I6 is fixed to the motor board I and carries a hollow post Hwhich supports a scanning member I9 for movement over the turntable 9 inwell known manner, the scanning member I9 comprising a supporting arm 2|for a pick-up device 23, the needle 25 of which is adapted to track thesound groove of the record II. The post I! extends through the motorboard I and has a lever 21 fixed to its lower end, whereby, as thescanning member I9 moves relative to the record, the lever 2'! moveswith it and in the same direction.

To the motor board is also fixed a, plate 29 which pivotally carries asuitable electric motor 3| of the self-starting type, the motor 3|having its armature shaft 33 extending upwardly through an opening 34 inthe motor board and terminating adjacent the turntable flange I3, asclearly shown in Fig. 2. The plate 29 also pivotally carries asubstantially L-shaped lever 35, the longer arm 35a. of which has adownwardly extending pin 31 and an upwardly extending pin 39 thereon,and the shorter arm 35b of which bears against the armature shaft 33. Acoil spring 4| having one end fixed to the frame of the motor 3| and itsother end fixed to the pin 3'! constantly urges the lever arm 35bagainst the armature shaft 33, the tension on the spring 4| being suchthat, when the lever 35 is moved away from the motor 3|, it will causethe motor to pivotally follow the arm 35b until a friction wheel 43 onthe armature shaft 33 engages the peripheral flange I3 of the turntable9 whereupon, if the motor 3| is energized, the rotating friction wheel43 will rotate the turntable 9 and thus impart a starting impulse to therotor I.

The arm 21a of the lever 21 has a downwardly extending pin 45 thereonwhich is adapted to engage the toe 350 of the lever 35 when the scanningmember I9 is moved away from the turntable 9, the pin 45,, in turn,moving the lever 35 away from the motor 3|. When this movement takesplace, the pin 39 of the lever 35, which is received in the forked endof the movable member 41 of a switch 49 in series with the motor 3|,moves the member 47 to close the circuit to the motor 3|. It will thusbe evident that, by merely moving the scanning member I9 away from theturntable 9 a sufficient distance, the pin 45 will move the lever 35 tobring the friction wheel 43 into contact'with the flange I3 and tocomplete the circuit to the motor 3| immediately thereafter. Upon returnof the scanning member |9 toward the turntable, the spring 3| pulls thelever 35 back, causing the pin 39 to open the switch 49 again and alsocausing the lever arm 35b to force the armature shaft 33 away from theflange I3 by pivoting the motor 3| back to itsrest position.

Also fixed to the motor board I is a second plate 5| which carries thecontrol mechanism'for automatically stopping the phonograph uponcompletion of playing of each record. The plate 5| has staked orotherwise suitably secured thereto a downwardly extending stud 53 onwhich is rotatably carried a sleeve 55 staked at its lower end to a yokemember 51. A friction lever 59 is loosely mounted on the sleeve 55between a pair of washers BI and 63, the latter of which bears against aC-washer 65 on the sleeve 55. Interposed between the yoke 51 and thewasher BI and surrounding the sleeve 55 is a compression spring 61 whichforces the washer 6|, the lever 59 and the washer 63 with sufficientforce against the washer 65 to provide a frictional coupling between thelever 59 and the sleeve 55. Thus, although the frictlon lever 59 isrotatable on the sleeve 55, it will move as a unit therewith and withthe yoke 5'! in the absence of a restraining force. The pin 45 on thelever arm 21a extends downwardly between the side arms 51a and 51b ofthe yoke 51, and, when the scanning member I9 is moved across the recordII, the pin 45 engages the arm 571) and imparts counter-clockwiserotation to the yoke 51 (as viewed in Figs.

' 1, 4 and 5) which, in turn, imparts similar rotation to the frictionlever 59 through the friction coupling previously described. Thisfriction coupling can be arranged to impose no undue load on thescanning member I9 and still serve effectively for the purpose set forthby choosing a coil spring 61 of suitable strength.

Pivotally mounted on the plate 5| is a trip lever 69 having a pair ofdownwardly extending, aligned, apertured lugs II which serve as bearingsfor a plunger rod 13. One end of the rod I3 has a fiber or othersuitable cap thereon, while the other end thereof is reduced and isloosely received in the forked end 59a of the friction lever 59 whereby,as the lever 59 is moved counterclockwise in the manner heretoforedescribed, the rod 13 is advanced in the bearing members H to bring theplunger cap 15 into the path of movement of an actuating cam I1 on therotor l. The

trip lever 69 also has an arm 69a extending therefrom a distancesuflicient to engage a pin 19 on the movable element of a switch 8| inseries with the driving motor 3, as well as a shoulder 69b for a purposepresently to be set forth.

lever '2 I.

Fig. 5. from the turntable 9 whereupon the lever exextension 83d whichpasses through an opening 85in the motor board I .and carries, at itsupper end, a brake pad 81 adapted to engage the turntable peripheralflange I3. The pad 81 is held in a cup 89 (Fig. 6) formed on a screw 9|which is threadedly received in the extension 83d, whereby the pad 8!may be adjusted for wear relative to theflange I3, a nut 93 holding thescrew 9| in adjusted position. A coil spring 95 fixed-at one end to adownwardly extending lug 91 on the plate 5| and at the other end to asimilar lug 99-on the lever arm 83a constantly urges the brake pad intoposition to engage the flange I3 for holding the turntable 9 againstrotation. However, the brake lever 83 is normally held out of turntableengaging position by engagement of the shoulder 691) with the reducedend of the lever arm 83a, as clearly shown in Fig. 4, a second'coilspring |I having one end fixed to the lug 91 and the other end fixed toone of the lugs 'II constantly biasing the lever 69 into the positionshown in Fig. 4. At the same time, by engaging the arm 83a, the triplever 69 is limited in itsclockwise movement (Figs; 1, 2 and 4) underthe influence of the spring I0I.

The arm 83?) of the lever 83 is provided with a downwardly extending pinI93 adapted to be engaged by a laterally extending arm 2111' on the Whenthe scanning member I9 is moved away from the turntable 9, as previouslydescribed, the arm 21b engages the pin I93 and rotates-the lever 83 in aclockwise direction (Figs. 1,4 and 5) against the action of the spring95 to remove the brake pad 81 from engagement with the turntable flangeI3. At the same time, the curved extension 21c of the lever 21 engagesthe pin "I9 and closes the switch 8| whereby the driving motor 3 isenergized preparatory to bringing the friction wheel 43 into engagementwith the flange I3.

In tracing the operation of the mechanism, let it be assumed that theparts are in rest position, with the needle 25 resting on a rubber orother suitable support I05, and with the switch BI open and the brakepad 8! in engagement with the turntable flange I3, as shown in dottedlines in The pick-up arm 2| is first moved away tension 210, byengagement with the pin I9, closes the driving motor switch 8|, and thelever arm 2Tb, by engagement with the pin I03, removes the brake pad 81from engagement with the turntable periphery I3, the pin 45 having beenbrought meanwhile into engagement with the toe armature shaft 33 isrotating, a starting impulse is imparted to the rotor I of the drivingmotor 3 and the turntable 9 with its record II will continue to rotate.The pick-up arm 2| is then moved back to the turntable and the needle 25is placed in the starting groove of the record,

the spring 4| returning the lever 35 and the motor3| to initial positionand causing the switch 49 to be opened.

I During the operation just described, the pin 45; by engaging the yokearm 51a, moves the yoke 57 and the friction lever 59 to the positionshownin Fig. l, and when the pick-up arm 2| is moved back to the recordII and the needle 25 placed thereon, the pin 45 occupies the positionbetween the yoke arms 51a and 51b shown in Fig. 4. As the sound grooveof the record advances the pick-up arm 2|, the pin 45 graduallyapproaches and eventually engages the yoke arm 51b, thereafter impartingcounter-clockwise rotation to the yoke 51 and the friction lever 59 (asseen in Fig. 4) and gradually advancing the plunger head or cap I5 intothe path of the cam TI. The cam edge 11a of the cam 11 is so formedthat, as long as the plunger 13 is advanced a distance corresponding tothe distance which the pick-up arm is advanced by adjacent turns of therecord sound groove, theleading end portion of the cam edge Ila willjust slip by the end of the plunger head 75 and the rise on the edge IIawhich follows will force the plunger 13 and the friction lever 59 backthe distance they were advanced during the preceding revolution. This ismade possible by reason of the friction coupling between the lever 59and the yoke 51.

When reproduction of the record has been completed, at which time thepick-up arm occupies the position designated by its center line A 'inFig. 5, the coarse-pitched spiral lead-in groove IIl'I passes under theneedle 25 and quickly moves the pick-up arm 2| to the positionrepresented by its center line B in Fig. 5. The resulting effect on theplunger 13 is to move it faster and further into the path of the cam 11so that, upon the next revolution of the rotor I, the cam edge 11?)strikes the plunger head 15 and imparts to it and to the trip lever 69counter-clockwise movement (as seen in Fig. 5) against the action of thespring IOI. Thereupon, the arm 69a opens the switch 8| and moves pastthe pin I9 after which the spring Illl returns the trip lever 69 to itsnormal position. At the same time, since the shoulder 6922 has beenremoved from the end of the arm 83a, the spring 95 moves the brake lever83 counter-clockwise about its pivot to bring the friction pad or brake81 into engagement with the turntable flange I3 to positively hold theturntable 9 against rotation. The pick-up arm may then be returnedtorest position with the needle 25 on the support I05, at which point theoperating cycle was commenced.

The modification of my invention thus far described includes thestarting motor 3| for autor matically starting the driving motor 3. Incertain cases, it may be preferable to employ a phonograph wherein thestarting motor 3| is omitted, so that a starting impulse must beimparted to the driving motor 3 by hand. The 'modification of myinvention shown in Figs. '7 to 9 is provided to fill the requirements ofsuch cases.

In this modification, the structure of the automatic stopping mechanismis almost identical with that previously described in connection withFigs. 1 to '7. In place of the lever 21, however, 'I provide a manuallyoperable lever I09 which is fixed to the pivot post IT for rotationtherewith in a manner similar to the lever 21. The lever I09 is providedwith an upwardly directed extension III which passes through an openingH3 in the motorboard I and through a slot in an index plate I I5, beingprovided with a handle portion I I! which may be easily gripped betweenthe fingers for manipulation of the lever I99. The index plate may bemarked with the designations on and off with reference to the motorswitch 8! to indicate that, when the lever I09 is moved manually to theon position, the

motor 3 is energized, and when it is moved to the off position, theswitch 8I is open and the motor 3 deenergized.

The lever I09 is provided with an arm I091) which corresponds to thelever arm ZIb and 00- operates with the downwardly extending pin I93 ofthe brake lever 83 in the manner previously described in connection withFigs. 1 to '7. The lever I09 is also provided with a curved extensionI090 which corresponds to the curved extension 270 of the lever 21,being forkedat its extreme end to receive the pin I9 of the switch 8 I.

Also fixed to the pivot post I! is a short lever II9 corresponding tothe lever arm 21a and carrying the downwardly extending pin 45. Thelever IIS moves in unison with the pick-up arm 2! and its pin 45 actsupon the yoke 51 in exactly the same manner as in the previouslydescribed modification of my invention.

' When it is desired to operate the form of my invention disclosed inFigs. 8 and 9, the lever I09 is moved to the on position, as shown inFig. 8, whereupon theswitch BI is closed and the motor 3 is energized.The record is then played and the trip lever 69 is eventually tripped bythe cam 11 in the manner heretofore described. Thereupon, the lever arm69a opens the switch 8] and forces the lever I 89 back to the offposition, and, since this'removes the lever arm I091) from engagementwith the pin I03, the spring 95 rotates the brake lever 83counter-clockwise (as seen in Fig. 7) to bring the brake pad 87 intoengagement with the turntable flange I3. However, when the lever I IE9is returned to on position, its arm I091) again engages the pin I63 andforces the brake lever 83 to rotate in a clockwise direction to removethe brake pad 8! from engagement with the turntable flange I3. Theswitch 8| is preferably of the toggle type and is provided with a spring(not shown) which operates in well known manner to retain the movableswitch element carrying the pin 79 to one or the other side of itspivotal axis, and this spring may be relied upon to hold the lever I09in on position against the action of the spring 95.

It will be noted that, in the modification of the invention now underconsideration, the lever arm 83a is shorter than the corresponding leverarm of the construction of Figs. 1 to '7, and that it does not engagethe shoulder 69b of the trip lever 69, In the earlier describedmodification, the reduced end of the lever arm 83a is relied upon toprevent rotation of the trip lever 69 to a point where the plunger head"I will fail to be interposed in the path of the cam II as the plunger73 is gradually advanced. In the modification of the invention shown inFigs. 8 and 9, however, this function is performed by a pin I2I fixed tothe plate 5I.

With either modification of my invention, should the plunger head or cap15 be advanced into the path of the cam TI and the turntable 9 rotatedbackwards (i. e., counter-clockwise, as seen in Figs. 1 and 8), the rearedge 17d of the cam II will strike the plunger head I5 and possiblydamage the parts, particularly if this practice is carelessly continued.To eliminate this possibility, I preferably sharply taper off the rearedge portion 'I'Icof the cam edge 'I'Ia. With'this construction, if theturntable 9 is rotated in the wrong direction, the sharply tapered camedge He will merely force the plunger rod .13 back through its bearingsII and the automatic stop mechanism will not be damaged.

From the foregoing description of two modifica'tionsiof my invention, itwill be apparent to those skilled in the art" that my improved start andstop "mechanism has a number of advantages over those previously known.For example, it is possible, with my present invention, to repeat anyportion of therecord that may be covered by the pickup device within thelimits of movement of the pick-up arm 2I determined by the yoke arms 51aand 57b, and the pin 45. Movement of the pick-up arm within these limitswill have no eifect whatsoever upon the yoke 51 and its associatedfriction lever 59.

It will also be apparent to those skilled in the art that, although Ihave-shown and described but two modifications of my invention, manyother modifications thereof and changes therein are possible. I desire,therefore, that my invention shall not be limited except insofar as ismade necessary by the prior art and bythe spirit of the appended claims.

I claim as my invention:

1. In a phonograph of the type having a nonself-starting motor, a membermovable relative to a record in playing position on the phonograph,means responsive to movement of said member in one direction forimparting a starting impulse to said motor, andmeans responsive tomovement of said member in another direction for stopping said motor. I

2. In a phonograph of the type having a nonself-starting motor, a membermovable relative to a record in playing position on the phonograph,means associated with said member and responsive to movement thereof atleast a predetermined distance in one direction for imparting a startingimpulse to said motor, and means responsive to movement of said memberin another direction for stopping said motor.

3. In a phonograph, the combination of a driving motor, of thenon-self-starting type which includes a rotor, a normally inactiveauxiliary motor of the self-starting type associated with said rotor, amember movable relative to a record in playing position on thephonograph, and coupling means between said member and said auxiliarymotor adapted to energize said auxiliary motor and cause it to impart astarting impulse to said rotor upon movement of said member to apredetermined position.

4. The invention set forth in claim 3 characterized in that said rotorhas a record supporting turntable 'mounted thereon, characterizedfurther in that said auxiliary motor is mounted adjacent said turntablefor movement toward and away from said turntable, and characterizedstill further by the addition of means constantly urging said auxiliarymotor away from said turntable, said coupling means acting to bring saidauxiliary motor into engagement with said turntable upon movement ofsaid member to said predetermined position.

5. The invention set forth in claim 3 charac terized in that said rotorhas a record supporting turntable mounted thereon, characterized furtherin that said auxiliary motor is an electric motor and has a frictionwheel on its armature shaft, said auxiliary motor being mounted adjacentsaid turntable periphery for pivotal movement relative thereto, andcharacterized still further by the addition of means'constantly urgingsaid auxiliary motor away from said turntable, said coupling meansacting to bring said friction wheel into engagement with the turntableperiphery to impart a starting impulse to said rotor upon movement ofsaid member to said predetermined position.

6. In a phonograph, the combination of a motor including a rotor, anactuating element on said rotor, a turntable carried by said rotor andadapted to support a record for playing, a rec 0rd scanning membermovable relative to said record, and means associated with said scanningmember arranged to be actuated by said actuating element upon avariation in movement of said I scanning member relative to said recordfor stopping rotation of said rotor.

'7. In a phonograph, the combination of an electric motor including arotor, an actuating element on said rotor, a turntable carried by saidrotor and adapted to support a record for playing, a record scanningmember movable across said recordat a predetermined speed when scanningthe record, and means associated with said scanning member forcontrolling the motor, said control means being movable by said scanningmember a predetermined distance toward the path ,of'movement of saidactuating element during each revolution of the rotor while said recordis being scanned, and said actuating element and control means being soconstructed and arranged that, as long as said scanning member traversesthe record at the scanning speed, said control means is insuificentlyadvanced to be actuated by said actuating means to stop the motor, butwhen said scanning member traverses the record at a substantiallygreater speed, said control means is advanced sufficiently to beactuated by said actuating means to stop rotation of said rotor.

8. The invention set forth in claim '7 characterized in that saidcontrol means is frictionally associated with said scanning memberwhereby it is movable relative to said scanning member, andcharacterized further in that said actuating element is adapted, duringeach revolution of the rotor, to return said control means the distanceit is advanced by said scanning member so long as said scanning membertraverses the record at the scanning speed.

9. The invention set forth in claim '7 characterized in that saidcontrol means includes a lever which is frictionally associated withsaid scanning member whereby it is movable relative to I slidable memberthat, during each revolution of the rotor, said cam returns saidslidable member the normal distance it is advanced in response tomovement of said scanning member at said scanning speed, but when saidscanning member moves over the record at a greater speedwhereby saidslidable member is advanced a greater than normal distance relative tosaid cam, said cam engages said slidable member to effect stopping ofthe motor.

10. The invention set forth in claim '7 characterized in that saidcontrol means includes a pair I of frictionally coupled, relativelymovable elements, and characterized further in that said scanning memberis arranged to be movable with respect to one of said elements withinpredetermined limits without moving said last named element wherebyportions of the record may be repeated without affecting operation ofsaid motor.

11. The invention set forth in claim 7 characterized by the addition ofa switch in the circuit of said motor, and characterized further in thatsaid control means is arranged to open said switch upon being actuatedby said actuating element.

12. The invention set forth in claim 7 characterized by the addition ofa brake device arranged to engage said turntable but normally.out ofengagement therewith, and characterized further in that said controlmeans is arranged to eflect engagement of said turntable by said brakedevice upon being actuated by said actuating element.

13. The invention set forth in claim '7 characterized by the addition ofa switch in the circuit of said motor and by the addition of a brakedevice arranged to engage said turntable but normally out of engagementtherewith, and characterized further in that said control means isarranged to open said switch and to efiect engagement of said turntableby said brake device upon being actuated by said actuating element.

14. In a phonograph, the combination of a motor, a turntable arranged tobe driven thereby and adapted to support a record for playing, a recordscanning member associated with said turntable, a switch in the circuitof said motor, a brake device arranged to engage said turntable,manually operable means for closing said switch and removing said brakedevice from engagement with said turntable whereby said motor is adaptedto drive said turntable, and means controlled by said scanning memberfor automatically opening said switch and effecting engagement of saidbrake device with said turntable and for resetting said manuallyoperable means to initial position.

15. In a phonograph, the combination of a motor, a turntable arranged tobe driven thereby and adapted to support a record for playing, a recordscanning member associated with said turntable, a switchin the circuitof said motor, a brake device arranged to engage said turntable,manually operable means for closing said switch and removing said brakedevice from engagement with said turntable whereby said motor is adaptedto drive said turntable, means controlled by said scanning member forautomatically opening said switch and eifecting engagement of said brakedevice with said turntable and for resetting said manually operablemeans to initial position, and means carried by said motor for actuatingsaid last named means to efiect the opening of said switch, theengagement of said braking device with said turntable, and the resettingof said manually operable means.

16. In a phonograph of the type having a nonself-starting motor, amember movable relative to a record in playing position on thephonograph, means responsive to movement of said member for imparting astarting impulse to said motor, and means also responsive to movement ofsaid member for stopping said motor.

EMILE C. GUEDON.

